– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 3 pm Tue 10 Nov Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Tue 10 Nov Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryHeavy rain (total 24mm), heaviest during Tue afternoon. Very mild (max 15°C on Wed morning, min 9°C on Tue afternoon). Wind will be generally light. | Days 5–7 Weather SummaryHeavy rain (total 30mm), heaviest during Sat night. Very mild (max 14°C on Fri afternoon, min 6°C on Sun night). Wind will be generally light. | ||||||||||||||||
Tue 10 | Wednesday 11 | Thursday 12 | Friday 13 | Saturday 14 | Sunday 15 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  | | | | | | |  |  |  |  | | | |
heavy rain | light rain | cloudy | cloudy | cloudy | cloudy | cloudy | cloudy | cloudy | cloudy | light rain | rain shwrs | light rain | rain shwrs | mod. rain | light rain | rain shwrs | |
Cloud base (m) | 600 | 700 | 2150 | 6000 | 6450 | 2750 | 4250 | 6050 | 4750 | 2750 | 1850 | 750 | 1450 | 1450 | 550 | 550 | 550 |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 21 | 3 | — | — | — | — | — | — | — | — | 2 | 0.3 | 0.2 | 6 | 6 | 4 | 11 |
max °C | 10 | 13 | 15 | 14 | 13 | 14 | 14 | 13 | 15 | 14 | 9 | 10 | 8 | 7 | 7 | 8 | 7 |
min °C | 9 | 11 | 14 | 14 | 12 | 13 | 13 | 12 | 15 | 11 | 8 | 9 | 7 | 7 | 7 | 8 | 6 |
chill °C | 7 | 9 | 13 | 13 | 11 | 12 | 12 | 12 | 14 | 10 | 8 | 8 | 5 | 5 | 4 | 6 | 4 |
Freezing level m | 2600 | 2950 | 2850 | 2900 | 2850 | 2500 | 2650 | 2900 | 2750 | 2550 | 2050 | 1950 | 1750 | 1650 | 1800 | 1900 | 1650 |
 | — | — | 7:09 | — | — | 7:11 | — | — | 7:13 | — | — | 7:15 | — | — | 7:16 | — | — |
 | 4:34 | — | — | 4:31 | — | — | 4:30 | — | — | 4:30 | — | — | 4:29 | — | — | 4:27 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Heavy rain (total 24mm), heaviest during Tue afternoon. Very mild (max 15°C on Wed morning, min 9°C on Tue afternoon). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Heavy rain (total 30mm), heaviest during Sat night. Very mild (max 14°C on Fri afternoon, min 6°C on Sun night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table.For a wider overview of the weather, consult the Weather Map of Washington.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
 | |||||
SHIP2305 | |||||
SHIP7814 | |||||
SHIP9967 | |||||
SHIP9813 |
* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.